LaMotte 1200 COLORIMETER SULFATE 1200-SU - Manual (Page 4)

SULFATE TEST METHOD SPECIFICATIONS
APPLICATION
Drinking and surface; domestic and industrial wastes.
RANGE
5 to 100 ppm Sulfate
METHOD
Sulfate ion is precipitated in an acid medium with barium chloride to form a barium
sulfate suspension in proportion to the amount of sulfate present.
HANDLING & PRESERVATION
Sulfate samples may be preserved by refrigeration at 4°C up to 7 days in glass or plastic
containers without any change in concentration.
INTERFERENCES
Suspended matter and color interference may be removed by a filtration step. Silica in
excess of 500 mg/L will interfere.
LaMOTTE COMPANY
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PO Box 329 • Chestertown • Maryland • 21620 • USA
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